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Data last updated: Oct 23, 2026, 5:45 PM ETLatest filing: Oct 22, 2026Now: Oct 24, 2026, 10:20 AM ET

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David Neafus

Named as an officer, director or promoter on SEC Form D filings · MA, NH · Sep 29, 2008 → Dec 23, 2025

11deals (issuers)
$292.7Mreported sold
151investors
35Form D filings
2008–2025years on file
Follow this personLook further ↓PDF

Data last updated Oct 23, 2026, 5:45 PM ET · Courts (RECAP) last checked: Oct 24, 2026, 2:15 AM ET · SEC enforcement last checked: covered by the index scan as of Oct 24, 2026, 2:50 AM ET

The short version

David Neafus is listed as an executive officer on 35 SEC Form D filings by 11 issuers between Sep 2008 and Dec 2025. Largest by amount reported sold: Avilar Therapeutics, Inc. (Waltham, MA — pharmaceuticals — 2020–2023; $75.3M reported sold to 5 investors), Afferent Pharmaceuticals, Inc. (San Mateo, CA — pharmaceuticals — 2009; $55M reported sold to 17 investors), Link Medicine Corp (Cambridge, MA — biotechnology — 2008; $40M reported sold to 16 investors), Obsidian Therapeutics, Inc. (Cambridge, MA — biotechnology — 2017; $32.4M reported sold to 8 investors), SYNDEVRX INC (Cambridge, MA — biotechnology — 2016–2025; $29.4M reported sold to 40 investors) and 6 more (all listed below).

What this means That is a lot of deals — 11 separate companies raised money with this person listed as executive officer, over about 17 years. Across those companies the filings report $292.7M sold in total.

Listed alongside Bradley J Carver (15 shared filings), James Michael Shanahan (15 shared filings), Eric Tooker (12 shared filings), Michael Clifford (8 shared filings), Charlie Flynn (7 shared filings) and 59 others.

What this means These are the other officers, directors or promoters the companies named on the same forms — the team around David. Each name links to their own page.

Public records searched: federal courts (CourtListener / RECAP), SEC enforcement releases, state securities regulators (AK, AL, AR, AZ, CA, CO, CT, DC, DE, FINRA, FL, GA, HI, ID, IL, KS, KY, LA, MA, MD, ME, MI, MO, MS, MT, NASAA, NC, ND, NH, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, WA, WI, WV, WY) — none found.

What this means Nothing turned up where we looked (3 sources). That does not prove there is nothing — it means none was found in those sources on that date.

We compared 35 public filings for David Neafus and found 11 differences, 4 worth asking the sponsor about: Investor count went down between filings; 10 filings report more than 10% of the money raised going to insiders; and more below.

What this means These are differences between the sponsor's own SEC filings — both values, dates and sources are listed in Key records, section 4. Most have ordinary explanations; ask the sponsor.

What the community is saying

Community search for David Neafus has not run yet — it is joining a line of 51,794 names; searches run around the clock at the hosts' allowed rate. Searched so far: 641 names.

Community comments are quoted as written by their authors. Sources searched: Bing (site:reddit.com / site:biggerpockets.com) and Reddit's own search, plus DuckDuckGo/Brave/BiggerPockets search when they are answering.

Key records

Five things investors ask first. Items still in human review are counted, not shown.

1. Lawsuits

None found in sources searched — federal courts (CourtListener / RECAP), checked Oct 24, 2026

What was searched

Sources searched: CourtListener bulk data (RECAP dockets as of 2026-09-30; recall-first rule 10-24) — federal district + bankruptcy courts State courts: not covered (one-tap state court links under Look further). PACER: not searched. · Last checked Oct 24, 2026, 2:15 AM ET.

State courts: not covered (one-tap state court links under Look further). No state offers a lawful automated statewide source PartnerFacts can use today. Texas (re:SearchTX) terms prohibit storing results in a database open to third parties; New York (WebCivil) and Massachusetts (MassCourts) require a browser check that blocks scripted queries; California has no statewide index (58 county portals; Rule of Court 2.503 grants name-based access case by case); Florida, Utah and Illinois offer paid or partial access whose terms for automated use are unverified. Washington (dw.courts.wa.gov; bulk index reports under a JISC data-dissemination agreement), Delaware (CourtConnect; Court of Chancery not included) and Arizona (apps.azcourts.gov/publicaccess, which has an official channel to request high-volume access) are the candidates; PartnerFacts will request written permission before any automated search. Federal courts are searched through CourtListener / RECAP.

2. Regulatory actions

None found in sources searched — SEC enforcement releases (index scan as of Oct 24, 2026, 2:50 AM ET) · state securities regulators: 48 regulators (FINRA, NASAA, 37 states) — crawled Oct 24, 2026, 8:48 AM ET

What was searched

SEC enforcement searched: SEC litigation releases and administrative proceedings — respondent names in the sec.gov index titles (30,205 releases, 1995-09-19 to 2026-10-23); release text is read only to confirm a candidate. Names that appear only in the body of a release are not found. — Searched SEC litigation releases and administrative proceedings (1995→ / 2007→) (30,205 records as of Oct 24, 2026, 2:50 AM ET) — nothing matched David Neafus..

State securities regulators: Securities regulators searched (64,910 actions): FINRA (38,350 actions, 1995–2026), NASAA (31 actions, 2000–2026; listing starts 1997), AK Division of Banking and Securities (273 actions, 1971–2025), AL Securities Commission (880 actions, 2001–2026), AR Securities Department (1,305 actions, 1998–2026), AZ Corporation Commission Securities Division (411 actions, 2017–2026), CA DFPI (25 actions, 2007–2024; listing starts 2002 — 16 of 12,159 DFPI respondent pages read so far; sponsor-name matches are read first), CO Division of Securities (731 actions, 2001–2026; older years from the Internet Archive (snapshot of 2026-05-02)), CT Department of Banking Securities Division (940 actions, 2006–2026; older years from the Internet Archive (snapshot of 2026-04-22)), DC DISB Securities Bureau (25 actions, 2012–2026), DE DOJ Investor Protection Unit (257 actions, 1987–2026), FL Office of Financial Regulation (49 actions, 2018–2026), GA Secretary of State Securities Division (65 actions, 2015–2026; listing starts 2012), HI DCCA Securities Enforcement Branch (26 actions, 2012–2026), ID Department of Finance Securities Bureau (663 actions, 1994–2026), IL Secretary of State Securities Department (4,122 actions, 2003–2023), KS Insurance Department Securities Division (58 actions), KY Department of Financial Institutions (342 actions, 2005–2026), LA Office of Financial Institutions Securities Division (13 actions, 2010–2025; listing starts 2008), MA Secretary of the Commonwealth Securities Division (125 actions, 2012–2025; live site blocks automated access — loaded from the Internet Archive snapshot of 2026-02-04), MD Attorney General Securities Division (1,054 actions, 2004–2026), ME Office of Securities (539 actions, 2000–2026), MI LARA Corporations, Securities & Commercial Licensing Bureau (201 actions), MO Secretary of State Securities Division (919 actions, 1998–2026), MS Secretary of State Securities Division (209 actions, 1995–2026), MT Commissioner of Securities and Insurance (597 actions, 2000–2026), NC Secretary of State Securities Division (265 actions, 2004–2024), ND Securities Department (711 actions, 1990–2026; the regulator no longer publishes this list live — loaded from the Internet Archive snapshot of 2026-01-06), NH Bureau of Securities Regulation (402 actions, 2002–2026), NM Regulation and Licensing Department Securities Division (90 actions, 2010–2025), NV Secretary of State Securities Division (118 actions, 2018–2026), NY Attorney General Investor Protection Bureau (44 actions, 2012–2026), OH Division of Securities (327 actions, 1993–2006), OK Department of Securities (2,531 actions, 1998–2026), OR Division of Financial Regulation (589 actions, 1988–2026), PA Department of Banking and Securities (1,448 actions, 2008–2024; the regulator no longer publishes this list live — loaded from the Internet Archive snapshot of 2024-08-09), RI DBR Securities Division (98 actions, 2005–2025), SC Attorney General Securities Division (540 actions, 2006–2026), SD Division of Insurance – Securities Regulation (106 actions, 2017–2026), TN Department of Commerce and Insurance Securities Division (405 actions, 1992–2026), TX State Securities Board (936 actions, 1999–2026), UT Division of Securities (772 actions, 2000–2026; older years from the Internet Archive (snapshot of 2010-05-27)), VT DFR Securities Division (137 actions, 2010–2026), WA DFI (2,039 actions, 2001–2026), WI DFI Division of Securities (1,072 actions, 1998–2026), WV Securities Commission (State Auditor) (64 actions), WY Secretary of State Compliance Division (6 actions, 2016–2024) — last crawled Oct 24, 2026, 8:48 AM ET. No machine-readable public listing today for IA, IN, MN, NE, NJ, VA (see docs/state-regulators.md).

3. Bankruptcies

None found in sources searched — federal bankruptcy courts (CourtListener / RECAP), checked Oct 24, 2026

What was searched

Sources searched: Federal bankruptcy courts via CourtListener / RECAP archive (federal district courts, federal bankruptcy courts). State courts: not covered (one-tap state court links under Look further). PACER: not searched (RECAP only). · Last checked Oct 24, 2026, 2:15 AM ET.

State courts: not covered (one-tap state court links under Look further). No state offers a lawful automated statewide source PartnerFacts can use today. Texas (re:SearchTX) terms prohibit storing results in a database open to third parties; New York (WebCivil) and Massachusetts (MassCourts) require a browser check that blocks scripted queries; California has no statewide index (58 county portals; Rule of Court 2.503 grants name-based access case by case); Florida, Utah and Illinois offer paid or partial access whose terms for automated use are unverified. Washington (dw.courts.wa.gov; bulk index reports under a JISC data-dissemination agreement), Delaware (CourtConnect; Court of Chancery not included) and Arizona (apps.azcourts.gov/publicaccess, which has an official channel to request high-volume access) are the candidates; PartnerFacts will request written permission before any automated search. Federal courts are searched through CourtListener / RECAP.

4. Differences between public sources

Comparisons cover issuers and sponsor groups — see the issuer pages under Deals

11 differences found between the filings for David Neafus — 4 worth asking about (compared 35 filings on Oct 24, 2026)

Note · Aug 15, 2014 – Nov 21, 2019

Bankruptcy case: PanGenX, Inc. — filed Aug 15, 2014

United States Bankruptcy Court, D. Massachusetts docket "PanGenX, Inc." filed Aug 15, 2014, closed Nov 21, 2019. PanGenX, Inc. (related issuer) is listed as Debtor ("PanGenX, Inc."). Our match estimate: 60%.

What this means A bankruptcy filing was found. Many are old or personal and have nothing to do with the deal — but ask what it was and when it closed.

Docket · United States Bankruptcy Court, D. Massachusetts ↗PanGenX, Inc. — PartnerFacts page ↗
Sources
Worth asking · Dec 30, 2021 – Dec 14, 2022

Investor count went down between filings — SYNDEVRX INC

The Dec 30, 2021 filing reports 7 investors; the Dec 14, 2022 Form D/A reports 6 investors.

What this means Investor counts normally only grow. A smaller number can mean investors left or were refunded, or a count was corrected. Ask the sponsor what happened.

Form D/A (earlier) · Dec 30, 2021 ↗Form D/A (later) · Dec 14, 2022 ↗SYNDEVRX INC — PartnerFacts page ↗
Sources
Worth asking · Aug 11, 2009 – Dec 23, 2025

10 filings report more than 10% of the money raised going to insiders

78% of the money raised went to insiders — SYNDEVRX INC · 53% of the money raised went to insiders — SYNDEVRX INC · 45% of the money raised went to insiders — SYNDEVRX INC · 43% of the money raised went to insiders — SYNDEVRX INC · 17% of the money raised went to insiders — SYNDEVRX INC · and 5 more

What this means The filing reports how much of the money raised was paid to insiders. Over 10% is high for most deals. Ask what it paid for.

Form D · Nov 15, 2024 ↗SYNDEVRX INC — PartnerFacts page ↗Form D/A · Mar 19, 2019 ↗Form D · Mar 21, 2018 ↗
Sources
Worth asking · Jul 17, 2012 – Apr 18, 2019

David Neafus appears on 3 deals that stopped filing before reaching their target

Arrakis Therapeutics, Inc. (last filing Apr 18, 2019; $14,999,992 sold of $74,999,986); Nayan Therapeutics, Inc. (last filing Feb 13, 2019; $3,000,000 sold of $25,000,000); PanGenX, Inc. (last filing Jul 17, 2012; $933,640 sold of $10,133,398). Each has no filing in more than two years and reported under half its target sold.

What this means An issuer whose last filing is more than two years old and reported under half its target sold. The raise may have closed early or quietly stopped. Ask what happened to each.

Arrakis Therapeutics, Inc. — PartnerFacts page ↗Nayan Therapeutics, Inc. — PartnerFacts page ↗PanGenX, Inc. — PartnerFacts page ↗
Sources
Worth asking · Jul 29, 2011 – Jul 17, 2012

Form D filed 354 days after the first sale — PanGenX, Inc.

The filing says the first sale was Jul 29, 2011. The Form D was filed Jul 17, 2012 — 354 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 339 days past that.

What this means The notice went in months after money was taken in. Late notices are common and carry no penalty by themselves, but it is fair to ask the sponsor why the paperwork lagged.

Form D · Jul 17, 2012 ↗PanGenX, Inc. — PartnerFacts page ↗
Sources
Note · Sep 12, 2008 – Sep 29, 2008

Form D filed 17 days after the first sale — Link Medicine Corp

The filing says the first sale was Sep 12, 2008. The Form D was filed Sep 29, 2008 — 17 days later. The rule: a Form D is generally due within 15 days after the first sale, so this one is 2 days past that.

What this means A late notice is common and carries no penalty by itself. It is worth asking the sponsor why the paperwork lagged.

Form D · Sep 29, 2008 ↗Link Medicine Corp — PartnerFacts page ↗
Sources
Note · Oct 23, 2009 – Dec 20, 2023

12 offerings have no amendment in the last 12 months and may still be open

No amendment in the last 12 months on an offering that may still be open — SYNDEVRX INC (latest filing Dec 20, 2023) · No amendment in the last 12 months on an offering that may still be open — SightStream Biotherapeutics, Inc. (latest filing Aug 25, 2023) · No amendment in the last 12 months on an offering that may still be open — SightStream Biotherapeutics, Inc. (latest filing Jun 12, 2023) · No amendment in the last 12 months on an offering that may still be open — SightStream Biotherapeutics, Inc. (latest filing Jun 3, 2022) · No amendment in the last 12 months on an offering that may still be open — SYNDEVRX INC (latest filing Mar 19, 2019) · and 7 more

What this means SEC rules expect a yearly amendment while an offering is still going. Ask the sponsor which of these raises have closed.

Form D/A · Dec 20, 2023 ↗SYNDEVRX INC — PartnerFacts page ↗Form D · Aug 25, 2023 ↗SightStream Biotherapeutics, Inc. — PartnerFacts page ↗
Sources
Note · Nov 5, 2009 – Dec 23, 2025

10 offerings changed their target amount between filings

Offering amount changed between filings — SYNDEVRX INC · Offering amount changed between filings — SightStream Biotherapeutics, Inc. · Offering amount changed between filings — Avilar Therapeutics, Inc. · Offering amount changed between filings — SYNDEVRX INC · Offering amount changed between filings — SYNDEVRX INC · and 5 more

What this means Targets change as deals grow or shrink. Ask whether later money has the same terms.

Form D/A (earlier) · Nov 17, 2025 ↗Form D/A (later) · Dec 23, 2025 ↗SYNDEVRX INC — PartnerFacts page ↗Form D (earlier) · Jun 3, 2022 ↗
Sources
Note · Aug 25, 2023 – Oct 16, 2025

Address moved from Medfield, MA to Walpole, MA — SightStream Biotherapeutics, Inc.

The people listed on the Aug 25, 2023 filing give Medfield, MA; on the Oct 16, 2025 filing they give Walpole, MA.

What this means Businesses move; this just shows the two places and dates. If you were told one city and the forms say another, ask which is current.

Form D · Aug 25, 2023 ↗Form D · Oct 16, 2025 ↗SightStream Biotherapeutics, Inc. — PartnerFacts page ↗
Sources
Note · Dec 17, 2020 – Feb 13, 2023

Address moved from Boston, MA to Waltham, MA — Avilar Therapeutics, Inc.

The people listed on the Dec 17, 2020 filing give Boston, MA; on the Feb 13, 2023 filing they give Waltham, MA.

What this means Businesses move; this just shows the two places and dates. If you were told one city and the forms say another, ask which is current.

Form D · Dec 17, 2020 ↗Form D/A · Feb 13, 2023 ↗Avilar Therapeutics, Inc. — PartnerFacts page ↗
Sources
Note · Sep 29, 2008 – Dec 23, 2025

David Neafus is listed with 2 different address states: MA, NH

MA on 32 filings (Sep 29, 2008 to Dec 23, 2025); NH on 3 filings (Aug 11, 2009 to May 5, 2011).

What this means The address on a Form D is usually the company's, not the person's home, so this often just reflects different companies. It can also mean a move. Nothing wrong by itself.

Form D · Sep 29, 2008 ↗Form D · Aug 11, 2009 ↗
Sources
What is compared

What is compared: every Form D and D/A we hold for this subject, side by side — filing dates vs. first-sale dates (the 15-day rule), amendment timing on open offerings (the yearly-amendment expectation), amounts sold, investor counts, offering amounts and minimums across amendments, industry and size bands, addresses, how each person's name and role is written, paid sellers' CRD numbers, and (for groups) where the member companies were formed and sit. Everything is as filed by the issuer; the SEC does not check it. Differences are common and usually have ordinary explanations — we show both values, the dates, and the source so you can ask. As of Oct 24, 2026.

5. Money to insiders

5 of 20 offerings report sales commissions totalling $1,255,000; 0 report finder's fees; 9 report proceeds to related persons totalling $5,653,665. (includes amounts the issuer reported as estimates)

Offering (latest filing)Sales commissionsFinder's feesTo insidersPaid to sell itSource
Dec 23, 2025 D/A
SYNDEVRX INC
File 021-529572
$0$0$1,111,665 (est.)
Includes $755,367 of compensation for executives in Item 3 for 2024-2026 (est.) and $356,298 for CFO/accounting services for an affiliate for 2024-2026 (est.)
None listed on this filingEDGAR ↗
Oct 16, 2025 D
SightStream Biotherapeutics, Inc.
File 021-561030
$0$0$0None listed on this filingEDGAR ↗
Oct 10, 2024 D
SYNDEVRX INC
File 021-526459
$0$0$0None listed on this filingEDGAR ↗
Dec 20, 2023 D/A
SYNDEVRX INC
File 021-358309
$80,000 (est.)$0$2,383,000 (est.)
Includes $1,505,000 of compensation for executives in Item 3 for 2020-2024 (est.) and $878,000 for CFO/accounting services for an affiliate for 2020-2024 (est.).
Butler Capital Partners BrokerCheck CRD 114242 ↗EDGAR ↗
Aug 25, 2023 D
SightStream Biotherapeutics, Inc.
File 021-490659
$0$0$0None listed on this filingEDGAR ↗
Jun 12, 2023 D/A
SightStream Biotherapeutics, Inc.
File 021-448088
$0$0$300,000 (est.)None listed on this filingEDGAR ↗
Feb 13, 2023 D/A
Avilar Therapeutics, Inc.
File 021-383553
$0$0$0None listed on this filingEDGAR ↗
Jun 3, 2022 D
SightStream Biotherapeutics, Inc.
File 021-448080
$0$0$0None listed on this filingEDGAR ↗
Mar 19, 2019 D/A
SYNDEVRX INC
File 021-308187
$25,000 (est.)$0$452,000 (est.)
The Issuer will use a portion of the proceeds of the offering to pay compensation, which is expected to be approximately $452,000 for 2 years in the aggregate for the three executive officers named in Item 3 above, and may continue after the second year.
Bernhard Hoffmann BrokerCheck CRD 1391658 ↗
via Growth Capital Services (CRD 124658 ↗)
EDGAR ↗
Feb 13, 2019 D
Nayan Therapeutics, Inc.
File 021-332794
$0$0$25,000 (est.)
Repayment of Note
None listed on this filingEDGAR ↗
Dec 8, 2017 D
Obsidian Therapeutics, Inc.
File 021-300326
$0$0$0None listed on this filingEDGAR ↗
Nov 9, 2017 D/A
SYNDEVRX INC
File 021-292815
$75,000 (est.)$0$216,000 (est.)
The Issuer anticipates that it will use a portion of the proceeds of the offering to pay compensation, which is currently expected to be approximately $216,000 per year in the aggregate for the three executive officers named in Item 3 above.
Bernhard Hoffmann BrokerCheck CRD 1391658 ↗
via Growth Capital Services (CRD 124658 ↗)

Gligor Tashkovich BrokerCheck CRD 5725183 ↗
via AlphaSource Capital Securities, LLC (CRD 145875 ↗)
EDGAR ↗
Mar 20, 2017 D/A
SYNDEVRX INC
File 021-186725
$325,000 (est.)$0$216,000 (est.)
The issuer anticipates that it will use a portion of the proceeds of the offering to pay compensation, which is currently expected to be approximately $216,000 per year in the aggregate for the three executive officers named in Item 3 above.
Bernhard Hoffmann BrokerCheck CRD 1391658 ↗
via Growth Capital Services (CRD 124658 ↗)

Gligor Tashkovich BrokerCheck CRD 5725183 ↗
via AlphaSource Capital Securities, LLC (CRD 145875 ↗)
EDGAR ↗
Mar 2, 2017 D
Arrakis Therapeutics, Inc.
File 021-281666
$0$0$0None listed on this filingEDGAR ↗
Jun 24, 2015 D
Microchips Biotech, Inc.
File 021-242364
$0$0$0None listed on this filingEDGAR ↗
Jul 17, 2012 D/A
PanGenX, Inc.
File 021-181341
$0$0$0None listed on this filingEDGAR ↗
May 5, 2011 D/A
SUSTAINX INC
File 021-156707
$0$0$0 (est.)None listed on this filingEDGAR ↗
Dec 18, 2009 D
Afferent Pharmaceuticals, Inc.
File 021-135875
$0$0$0 (est.)None listed on this filingEDGAR ↗
Aug 11, 2009 D
SUSTAINX INC
File 021-120677
$0$0$500,000 (est.)
Payments to be made to an executive officer, director or promoter shall be made in connection with such person's employment for the Company.
None listed on this filingEDGAR ↗
Sep 29, 2008 D
Link Medicine Corp
File 021-76287
$750,000 (est.)$0$450,000 (est.)MTS Securities, LLC BrokerCheck CRD 104059 ↗
via MTS Securities, MTS (CRD 104059 ↗)
EDGAR ↗
How this is counted

Counts come from Form D Items 12–15 on the filings in our index (latest filing per offering; one offering = one SEC file number; an amendment updates its offering rather than adding one). "To insiders" = gross proceeds used for payments to executive officers, directors or promoters. "—" = not reported on that filing. Amounts marked (est.) were reported as estimates. "Paid to sell it" = sales compensation recipients named on that filing (Item 12), each linked to FINRA BrokerCheck when a CRD number is reported.

Counted across every filing this person is listed on (latest filing per offering, per issuer).

Deals 11

Every issuer that named David Neafus on a Form D, newest first. A Form D is the notice a company files after it starts selling a private investment.

S
Biotechnology

SYNDEVRX INC

Cambridge, MA · Jul 13, 2016 → Dec 23, 2025 · 15 filings
  • Dec 23, 2025 · D/A · $6,467,100 sold of $20,000,000 · 7 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Nov 17, 2025 · D/A · $6,467,100 sold of $12,000,000 · 7 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Nov 15, 2024 · D · $978,000 sold of $12,000,000 · 5 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Oct 10, 2024 · D · $29,354,820 sold of $29,354,820 · 13 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Dec 20, 2023 · D/A · $23,249,350 sold of $30,000,000 · 7 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Dec 14, 2022 · D/A · $18,444,727 sold of $30,000,000 · 6 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Dec 30, 2021 · D/A · $14,672,214 sold of $25,000,000 · 7 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Jan 15, 2021 · D/A · $9,197,000 sold of $15,000,000 · 7 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Jan 17, 2020 · D · $6,100,000 sold of $12,000,000 · 6 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Mar 19, 2019 · D/A · $850,000 sold of $5,000,000 · 4 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Mar 21, 2018 · D · $500,000 sold of $5,000,000 · 1 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Nov 9, 2017 · D/A · $1,500,000 sold of $2,500,000 · 1 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Aug 15, 2017 · D · $500,000 sold of $2,000,000 · 1 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Mar 20, 2017 · D/A · $16,285,471 sold of $18,000,000 · 40 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Jul 13, 2016 · D/A · $13,410,221 sold of $15,000,000 · 38 investors · min. No minimum reported · role: Executive Officer (Mr. Neafus became Chief Financial Officer in December 2015.) EDGAR ↗

Raised $29.4M from 40 investors (100% of the $20M target) as of the latest filing. David is listed as executive officer on 15 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Biotechnology / 506(b) (3,253 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

SB
Biotechnology

SightStream Biotherapeutics, Inc.

Walpole, MA · Jun 3, 2022 → Oct 16, 2025 · 6 filings
  • Oct 16, 2025 · D · $1,791,165 sold of $1,791,165 · 9 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Aug 25, 2023 · D · $250,000 sold of $1,250,000 · 2 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Jun 12, 2023 · D/A · $3,065,000 sold of $3,500,000 · 21 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Mar 1, 2023 · D/A · $2,915,000 sold of $3,500,000 · 19 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Jun 3, 2022 · D · $1,900,000 sold of $1,900,000 · 13 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Jun 3, 2022 · D · $0 sold of Indefinite · 18 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $3.06M from 21 investors (100% of the $1.79M target) as of the latest filing. David is listed as executive officer on 6 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Biotechnology / 506(b) (3,253 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

AT
Pharmaceuticals

Avilar Therapeutics, Inc.

Waltham, MA · Dec 17, 2020 → Feb 13, 2023 · 2 filings
  • Feb 13, 2023 · D/A · $75,276,164 sold of $75,276,164 · 5 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Dec 17, 2020 · D · $20,276,164 sold of $60,000,000 · 3 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $75.3M from 5 investors (100% of the $75.3M target) as of the latest filing. David is listed as executive officer on 2 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Pharmaceuticals / 506(b) (800 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

NT
Biotechnology

Nayan Therapeutics, Inc.

Medfield, MA · Feb 13, 2019
  • Feb 13, 2019 · D · $3,000,000 sold of $25,000,000 · 3 investors · min. $381,500 · role: Executive Officer EDGAR ↗

Raised $3M from 3 investors (12% of the $25M target) as of the latest filing. David is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Biotechnology / 506(b) (3,253 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

OT
Biotechnology

Obsidian Therapeutics, Inc.

Cambridge, MA · Dec 8, 2017
  • Dec 8, 2017 · D · $32,436,323 sold of $49,936,323 · 8 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $32.4M from 8 investors (65% of the $49.9M target) as of the latest filing. David is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Biotechnology / 506(b) (3,253 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

AT
Biotechnology

Arrakis Therapeutics, Inc.

Waltham, MA · Mar 2, 2017
  • Mar 2, 2017 · D · $13,238,466 sold of $41,238,467 · 8 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $15M from 15 investors (36% of the $41.2M target) as of the latest filing. David is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Biotechnology / 506(b) (3,253 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

MB
Other Health Care

Microchips Biotech, Inc.

Lexington, MA · Jun 24, 2015
  • Jun 24, 2015 · D · $18,648,546 sold of $18,648,546 · 9 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $18.6M from 11 investors (100% of the $18.6M target) as of the latest filing. David is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer. "Similar" = offerings in the same industry claiming the same exemption, filed in the last 5 years: Other Health Care / 506(b) (4,189 filings); ranges are the middle half (25th–75th percentile). Computed by PartnerFacts from SEC EDGAR Form D data as of Oct 23, 2026, 5:45 PM ET. Rows without a range: fewer than 30 comparable filings, or not a Rule 506 offering. No ranking or score.

P
Other Health Care

PanGenX, Inc.

Auburndale, MA · Jul 17, 2012 → Jul 17, 2012 · 2 filings
  • Jul 17, 2012 · D · $933,640 sold of $10,133,398 · 6 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Jul 17, 2012 · D/A · $933,640 sold of $10,133,398 · 6 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $934K from 6 investors (9% of the $10.1M target) as of the latest filing. David is listed as executive officer on 2 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer.

S
Other Energy

SUSTAINX INC

West Lebanon, NH · Aug 11, 2009 → May 5, 2011 · 3 filings
  • May 5, 2011 · D/A · $20,000,000 sold of $20,000,000 · 9 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Mar 15, 2011 · D · $14,399,999 sold of $17,000,000 · 7 investors · min. No minimum reported · role: Executive Officer EDGAR ↗
  • Aug 11, 2009 · D · $3,999,998 sold of $3,999,998 · 5 investors · min. No minimum reported · role: Executive Officer EDGAR ↗

Raised $20M from 9 investors (100% of the $20M target) as of the latest filing. David is listed as executive officer on 3 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer.

AP
Other Health Care

Afferent Pharmaceuticals, Inc.

San Mateo, CA · Nov 5, 2009 → Dec 18, 2009 · 2 filings
  • Dec 18, 2009 · D · $3,000,000 sold of $23,000,000 · 6 investors · min. No minimum reported · role: Executive Officer (Chief Financial Officer & Treasurer) EDGAR ↗
  • Nov 5, 2009 · D · $150,000 sold of $150,000 · 6 investors · min. No minimum reported · role: Executive Officer (Chief Financial Officer & Treasurer) EDGAR ↗

Raised $55M from 17 investors (100% of the $23M target) as of the latest filing. David is listed as executive officer on 2 filings for this deal.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer.

LM
Biotechnology

Link Medicine Corp

Cambridge, MA · Sep 29, 2008
  • Sep 29, 2008 · D · $40,000,000 sold of $40,000,000 · 4 investors · min. $300,000 · role: Executive Officer EDGAR ↗

Raised $40M from 16 investors (100% of the $40M target) as of the latest filing. David is listed as executive officer.

Latest filing on EDGAR ↗
Sources

Every row is a Form D or D/A on which the issuer listed this name as a related person. Amount sold and investors are the maximum reported on any filing for this issuer.

People around David 40

Officers, directors, promoters and management entities named on the same filings, as of Oct 23, 2026, 5:45 PM ET. Showing the 40 with the most shared filings.

BC
No photo found yet (own website and image search run after this page is viewed)
Person

Bradley J Carver

Executive Officer, Director · 15 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

JS
No photo found yet (own website and image search run after this page is viewed)
Person

James Michael Shanahan

Executive Officer, Director · 15 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

ET
No photo found yet (own website and image search run after this page is viewed)
Person

Eric Tooker

Director · 12 shared filings (1 issuer) · also on 2 other issuers

Listed on the same filings as David Neafus. Their page shows their other deals.

MC
No photo found yet (own website and image search run after this page is viewed)
Person

Michael Clifford

Director · 8 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

CF
No photo found yet (own website and image search run after this page is viewed)
Person

Charlie Flynn

Director · 7 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

RD
No photo found yet (own website and image search run after this page is viewed)
Person

Reza Dana

Director · 6 shared filings (1 issuer) · also on 1 other issuer

Listed on the same filings as David Neafus. Their page shows their other deals.

JW
No photo found yet (own website and image search run after this page is viewed)
Person

Jason Werner

Executive Officer, Director · 6 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

JZ
No photo found yet (own website and image search run after this page is viewed)
Person

Jiagang Zhao

Director · 5 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

CF
No photo found yet (own website and image search run after this page is viewed)
Person

Charles Flynn

Director · 4 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

CH
No photo found yet (own website and image search run after this page is viewed)
Person

Charles Hutchinson

Director, Promoter · 4 shared filings (2 issuers) · also on 1 other issuer

Listed on the same filings as David Neafus. Their page shows their other deals.

RL
No photo found yet (own website and image search run after this page is viewed)
Person

Richard Love

Director · 4 shared filings (1 issuer) · also on 4 other issuers

Richard Love is on 5 issuers in total — a repeat sponsor. Their page lists every one.

JR
No photo found yet (own website and image search run after this page is viewed)
Person

Joshua Resnick

Director · 3 shared filings (2 issuers) · also on 11 other issuers

Joshua Resnick is on 13 issuers in total — a repeat sponsor. Their page lists every one.

DP
No photo found yet (own website and image search run after this page is viewed)
Person

David Prend

Director · 3 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

TM
No photo found yet (own website and image search run after this page is viewed)
Person

Troy McBride

Promoter · 3 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

TM
No photo found yet (own website and image search run after this page is viewed)
Person

Terry McGuire

Director · 3 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

BB
No photo found yet (own website and image search run after this page is viewed)
Person

Benjamin Bollinger

Promoter · 3 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

DK
No photo found yet (own website and image search run after this page is viewed)
Person

Dax Kepshire

Executive Officer, Director, Promoter · 3 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

MD
No photo found yet (own website and image search run after this page is viewed)
Person

Milind Deshpande

Executive Officer, Director · 3 shared filings (2 issuers) · also on 2 other issuers

Listed on the same filings as David Neafus. Their page shows their other deals.

JW
No photo found yet (own website and image search run after this page is viewed)
Person

Jeffrey Welles

Director · 2 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

LM
No photo found yet (own website and image search run after this page is viewed)
Person

Lawrence G. Miller

Executive Officer, Director · 2 shared filings (1 issuer) · also on 6 other issuers

Lawrence G. Miller is on 7 issuers in total — a repeat sponsor. Their page lists every one.

AP
No photo found yet (own website and image search run after this page is viewed)
Person

Arthur M. Pappas

Director · 2 shared filings (1 issuer) · also on 10 other issuers

Arthur M. Pappas is on 11 issuers in total — a repeat sponsor. Their page lists every one.

MB
No photo found yet (own website and image search run after this page is viewed)
Person

Mitchell S. Bloom

Executive Officer · 2 shared filings (1 issuer) · also on 11 other issuers

Mitchell S. Bloom is on 12 issuers in total — a repeat sponsor. Their page lists every one.

LR
No photo found yet (own website and image search run after this page is viewed)
Person

Liam Ratcliffe

Director · 2 shared filings (1 issuer) · also on 10 other issuers

Liam Ratcliffe is on 11 issuers in total — a repeat sponsor. Their page lists every one.

KS
No photo found yet (own website and image search run after this page is viewed)
Person

Kevin Starr

Executive Officer, Director · 2 shared filings (1 issuer) · also on 8 other issuers

Kevin Starr is on 9 issuers in total — a repeat sponsor. Their page lists every one.

MG
No photo found yet (own website and image search run after this page is viewed)
Person

Michael Gilman

Executive Officer, Director · 2 shared filings (2 issuers) · also on 5 other issuers

Michael Gilman is on 7 issuers in total — a repeat sponsor. Their page lists every one.

PM
No photo found yet (own website and image search run after this page is viewed)
Person

Paul McDermott

Director · 2 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

TZ
No photo found yet (own website and image search run after this page is viewed)
Person

Thomas Zarrella

Executive Officer, Director · 2 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

DP
No photo found yet (own website and image search run after this page is viewed)
Person

Daniel A. Poscover

Executive Officer, Director · 2 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

EN
No photo found yet (own website and image search run after this page is viewed)
Person

Eric Neumann

Director · 2 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

TC
No photo found yet (own website and image search run after this page is viewed)
Person

Theresa Cameron

Director · 2 shared filings (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

JT
No photo found yet (own website and image search run after this page is viewed)
Person

Jesse Treu

Director · 2 shared filings (1 issuer) · also on 9 other issuers

Jesse Treu is on 10 issuers in total — a repeat sponsor. Their page lists every one.

PH
No photo found yet (own website and image search run after this page is viewed)
Person

Paulina Hill

Director · 1 shared filing (1 issuer) · also on 3 other issuers

Listed on the same filings as David Neafus. Their page shows their other deals.

SO
No photo found yet (own website and image search run after this page is viewed)
Person

Stephen Oesterle

Director · 1 shared filing (1 issuer) · also on 3 other issuers

Listed on the same filings as David Neafus. Their page shows their other deals.

SW
No photo found yet (own website and image search run after this page is viewed)
Person

Samuel Wu

Director · 1 shared filing (1 issuer) · also on 2 other issuers

Listed on the same filings as David Neafus. Their page shows their other deals.

WX
No photo found yet (own website and image search run after this page is viewed)
Person

Wenkai Xiang

Director · 1 shared filing (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

MC
No photo found yet (own website and image search run after this page is viewed)
Person

Michael Cima

Director · 1 shared filing (1 issuer) · also on 4 other issuers

Michael Cima is on 5 issuers in total — a repeat sponsor. Their page lists every one.

SY
No photo found yet (own website and image search run after this page is viewed)
Person

Scott Young

Executive Officer · 1 shared filing (1 issuer) · also on 1 other issuer

Listed on the same filings as David Neafus. Their page shows their other deals.

AR
No photo found yet (own website and image search run after this page is viewed)
Person

Adam J. Rosenberg

Executive Officer, Director · 1 shared filing (1 issuer) · also on 5 other issuers

Adam J. Rosenberg is on 6 issuers in total — a repeat sponsor. Their page lists every one.

PL
No photo found yet (own website and image search run after this page is viewed)
Person

Peter T. Lansbury

Executive Officer, Director · 1 shared filing (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

ES
No photo found yet (own website and image search run after this page is viewed)
Person

Edward Scolnick

Director · 1 shared filing (1 issuer)

Listed on the same filings as David Neafus. Their page shows their other deals.

The team behind the deals

Same business address

51 other issuers file from the same address (first 50 shown)

A shared address can mean the same team, a shared office building or a registered agent. It is a lead, not a conclusion.

Registrations and other filings

Business registration (state registry / Secretary of State)

Individuals are not matched to business registrations — registries list companies, and a name alone is not enough to tie a person to one. Officers and managers appear by name inside each matched company's record on the issuer pages. Registries searched: AL (Alabama Secretary of State — Business Entity Records (arc-sos.state.al.us), searched by issuer name, data as of Oct 24, 2026); CO (Colorado Secretary of State — Business Entities in Colorado (data.colorado.gov), data as of Oct 23, 2026); CT (Connecticut Secretary of the State — Business Registry (data.ct.gov), data as of Oct 24, 2026); FL (Florida Department of State, Division of Corporations — quarterly corporate data file (Sunbiz), data as of Oct 7, 2026); NY (New York Department of State — Corporations and Other Entities (data.ny.gov: All Filings + Active Corporations), data as of Oct 20, 2026); OR (Oregon Secretary of State — Active Businesses, All (data.oregon.gov), data as of Oct 20, 2026); PA (Pennsylvania Department of State — Registered Businesses, Current (data.pa.gov), data as of Oct 6, 2026); TX (Texas Comptroller — Active Franchise Taxpayers incl. Secretary of State file data (data.texas.gov), data as of Oct 24, 2026). Registries of other states have not been searched: many publish no bulk file and require a CAPTCHA or bot challenge on their search page, which we do not bypass (Delaware, for example, offers no public bulk file).

Adviser registration (Form ADV)

None of the 11 issuers this person is listed on appears in Form ADV (searched 24,962 advisers as of Oct 2, 2026). A person is never an adviser firm; Form ADV is checked for the issuers and the management companies they are listed with.

Other offering types (Regulation A and Regulation Crowdfunding)

Searched SEC Regulation A Data Sets (Forms 1-A, 1-K, 1-Z; 2015 Q2 → 2026 Q3); SEC Crowdfunding Offerings Data Sets (Form C family; 2016 Q2 → 2026 Q3); EDGAR form index for 2026 Q3 → 2026 Q4 (51,358 records as of Oct 23, 2026, 8:41 PM ET) — nothing matched this name.

Property records none — individuals are not matched

Property records are matched to companies only, never to individuals, so none are matched to David Neafus by design. Searched property records in Hillsborough County FL (Clerk recorded-document index Oct 14, 2026 to Oct 15, 2026 + FL DOR 2026 ownership roll), Miami-Dade County FL (FL DOR 2026 ownership roll), Harris County TX (HCAD 2026 ownership roll), Dallas County TX (DCAD 2026 ownership roll), New York City ACRIS documents and PLUTO ownership rows already retrieved for other issuers, Cook County IL sale and ownership rows already retrieved for other issuers (814,874 records as of Oct 23, 2026, 8:59 PM ET) for the 11 issuers this person is listed on — nothing matched.

Public profiles and social

Websites and social links of the issuers David Neafus is listed on: none on file. No website or social profile named in Link Medicine Corp's SEC filings (Form C, Reg A, Form ADV; checked Oct 24, 2026). Web search for this name: #352,113 of 374,652 in line (1,386 issuers searched so far). One-tap searches: Look further ↓

Look further

One-tap searches on sites we do not index ourselves, with the name pre-filled (Cambridge, MA). Each opens in a new tab; what you find there is not verified by PartnerFacts.

Social and web

LinkedIn people search ↗Instagram ↗X (Twitter) ↗Facebook ↗YouTube ↗Google ↗Google Images ↗Google News ↗Meta Ad Library ↗

Courts

CourtListener / RECAP (federal) ↗PACER case locator (federal, login) ↗Massachusetts MassCourts ↗New Hampshire state courts — find the court ↗California — find the county court ↗Los Angeles Superior Court case search ↗

Securities regulators

SEC EDGAR full-text search ↗SEC action look-up ↗FINRA BrokerCheck ↗SEC IAPD adviser search ↗

Business registries

Massachusetts Secretary of State business search ↗New Hampshire Secretary of State business search ↗California Secretary of State business search ↗OpenCorporates ↗

Change history

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